// 模板字符串
// const str = 'hello es2015,this is a string'

const str = `hello es2015,this is a \`string\``//字符串外加入反引号，若字符串里面要单引号则加反斜杠转义
console.log(str)// hello es2015,this is a `string`

//字符串内换行即可，同时保留换行字符/n

const str = `hello es2015,

this is a \`string\``
console.log(str)
/* 
hello es2015,

this is a \`string\`
*/

//模板字符串当中支持通过插值表达式的方式在字符串当中嵌入对应的数值

